PHYSICS QUIZ Test Your Knowledge Of Physics With These Quizzes Physics Online Quiz for Kids and Adults #1. How much atoms are there in one human cell? One Billion 100 Million 10 Trillion 100 Trillion Work Harder #2. What is the speed of Light? Approx. 200,000 Km per second Approx. 300,000 Km per second Approx. 300,000 Km per hour Approx. 200,000 Km per minute Work Harder #3. Who was the first person that gave the concept of the smallest particle? Neils Bohr Democritus Heisenberg Work Harder Previous Finish Results Well Done. You Are Roaring Like A Lion Keep Working. Slow & Steady Wins The Race START NEW
